The Michigan departments of Environmental Quality and Agriculture said Thursday they'll work with farmers and municipal wastewater system operators

TRAVERSE CITY, Mich. -- Michigan officials are promising further efforts to prevent the kind of toxic algae growth in Lake Erie that forced a recent shutdown of the public drinking water system in Toledo.

The Michigan departments of Environmental Quality and Agriculture said Thursday they'll work with farmers and municipal wastewater system operators to reduce the amount of phosphorus and other nutrients that reach the lake.

They called for the federal government to establish a national drinking water standard for microcystin, the toxin produced by blue-green algae.